------------[ cut here ]------------
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_check_unset include/linux/skbuff.h:1164 [inline], CPU#1: syz.8.4668/29378
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_set include/linux/skbuff.h:1211 [inline], CPU#1: syz.8.4668/29378
WARNING: ./include/linux/skbuff.h:1165 at nf_reject6_fill_skb_dst net/ipv6/netfilter/nf_reject_ipv6.c:264 [inline], CPU#1: syz.8.4668/29378
WARNING: ./include/linux/skbuff.h:1165 at nf_send_unreach6+0x828/0xa20 net/ipv6/netfilter/nf_reject_ipv6.c:401, CPU#1: syz.8.4668/29378
Modules linked in:
CPU: 1 UID: 0 PID: 29378 Comm: syz.8.4668 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:skb_dst_check_unset include/linux/skbuff.h:1164 [inline]
RIP: 0010:skb_dst_set include/linux/skbuff.h:1211 [inline]
RIP: 0010:nf_reject6_fill_skb_dst net/ipv6/netfilter/nf_reject_ipv6.c:264 [inline]
RIP: 0010:nf_send_unreach6+0x828/0xa20 net/ipv6/netfilter/nf_reject_ipv6.c:401
Code: 85 f6 74 0a e8 79 56 76 f7 e9 c8 fc ff ff e8 6f 56 76 f7 4c 8b 7c 24 18 e9 34 fa ff ff e8 60 56 76 f7 eb 9b e8 59 56 76 f7 90 <0f> 0b 90 e9 c7 fb ff ff 48 85 db 0f 84 81 00 00 00 4c 8d a4 24 20
RSP: 0018:ffffc90000a083c0 EFLAGS: 00010246
RAX: ffffffff8a4a3877 RBX: ffff88805d7b0780 RCX: ffff888022ee1e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08568 R08: ffff88803270e183 R09: 1ffff110064e1c30
R10: dffffc0000000000 R11: ffffed10064e1c31 R12: ffff888059aa2101
R13: dffffc0000000001 R14: 1ffff1100baf60fb R15: 0000000000000000
FS:  00007fb7415216c0(0000) GS:ffff888125aff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafaaae56c0 CR3: 000000006d606000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 nft_reject_inet_eval+0x441/0x690 net/netfilter/nft_reject_inet.c:44
 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
 nft_do_chain+0x40c/0x1920 net/netfilter/nf_tables_core.c:285
 nft_do_chain_inet+0x25d/0x340 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
 nf_hook include/linux/netfilter.h:273 [inline]
 NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:316
 __netif_receive_skb_one_core net/core/dev.c:5991 [inline]
 __netif_receive_skb+0xd3/0x380 net/core/dev.c:6104
 process_backlog+0x60e/0x14f0 net/core/dev.c:6456
 __napi_poll+0xc4/0x360 net/core/dev.c:7506
 napi_poll net/core/dev.c:7569 [inline]
 net_rx_action+0x707/0xe30 net/core/dev.c:7696
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 do_softirq+0xec/0x180 kernel/softirq.c:480
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx net/core/dev.c:5559 [inline]
 dev_loopback_xmit+0x327/0x490 net/core/dev.c:4236
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ip6_finish_output2+0x46f/0x16a0 net/ipv6/ip6_output.c:97
 ip6_mr_output+0x4e9/0x1100 net/ipv6/ip6mr.c:2415
 ip6_send_skb+0x1d5/0x390 net/ipv6/ip6_output.c:1984
 rawv6_push_pending_frames+0x6e9/0x8d0 net/ipv6/raw.c:588
 rawv6_sendmsg+0x1331/0x1820 net/ipv6/raw.c:918
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x19c/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb74078ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb741521038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fb7409b5fa0 RCX: 00007fb74078ebe9
RDX: 000000000000001f RSI: 0000200000000300 RDI: 0000000000000003
RBP: 00007fb740811e19 R08: 0000000000000000 R09: fffffffffffffdfd
R10: 0000000000003b00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7409b6038 R14: 00007fb7409b5fa0 R15: 00007ffcf4005f08
 </TASK>